JW Daughter...
It's nothing really... the book "Finished Mystery" (1917) mentions on page 188 that Michael the Archangel is the Pope...
What's more significant, though, is that this book is what the JWs were distributing in many countries when Jesus supposedly came down to the earth in 1918 to inspect all religious denominations... but it contains 600 pages of lies, false predictions and completely made-up BS. It even categorically predicted that the destruction of all religions would occur in April 1918... But somehow, JWs are led to believe that this book was "meat in due season"... (see also the DVD that was districuted last year during the District Convention... Faith In Action... this DVD actually praises this book)
By the way, I have a thread on this book that might interest you... (search "Finished Mystery - The Book That Jesus Approved)